10000mAh is the real capacity of the powerbank.But for all power bank there is a parameter called "Conversion rate". It's impossible this powerbank can charge a phone with10000mAh battery full. Since there is loss in the PCB board and also the charging wire. As Xiaomi company declares， the output capacity of this power bank is around 7300mAh.

How to verify it's original or fake Xiaomi power bank:

1 >> Find the authentication label on your Xiaomi box， scratch off its coating to obtain the 20-digit security code

2 >> go to this Xiaomi website: www.mi.com/verify/

3 >> Enter the code for verification it

- Smart mobile power bidirectional output to charge fast and secure with 18W maximum power.
- Support USB type-C charge and discharge， USB type-C adapter can charge the phone also supports type-C charger for mobile power charging directly.
- The Bluetooth headset and Xiaomi bracelet can be charged after double-click the button to open two hours charging current.
- High-density lithium polymer batteries.
- Ruggedness crash， anti-sweat corrosion with aluminum alloy metal case.
- Exhibits two visually exquisite contours， to enhance the sense of quality while also enhancing the feeling.
- Input/Output: 12V/1.5A; 9V/2A; 5V/2A
- Battery Energy: 3.85V 39.19Wh